Rights statement: © 2006 American Physical Society
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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Collimated multi-MeV ion beams from high-intensity laser interactions with underdense plasma
AU - Willingale, L
AU - Mangles, SPD
AU - Nilson, PM
AU - Clarke, RJ
AU - Dangor, AE
AU - Kaluza, MC
AU - Karsch, S
AU - Lancaster, KL
AU - Mori, WB
AU - Najmudin, Z
AU - Schreiber, J
AU - Thomas, Alec
AU - Wei, MS
AU - Krushelnick, K
N1 - © 2006 American Physical Society
PY - 2006/6/23
Y1 - 2006/6/23
N2 - A beam of multi-MeV helium ions has been observed from the interaction of a short-pulse high-intensity laser pulse with underdense helium plasma. The ion beam was found to have a maximum energy for He2+ of (40(-8)(+3)) MeV and was directional along the laser propagation path, with the highest energy ions being collimated to a cone of less than 10 degrees. 2D particle-in-cell simulations show that the ions are accelerated by a sheath electric field that is produced at the back of the gas target. This electric field is generated by transfer of laser energy to a hot electron beam, which exits the target generating large space-charge fields normal to its boundary.
AB - A beam of multi-MeV helium ions has been observed from the interaction of a short-pulse high-intensity laser pulse with underdense helium plasma. The ion beam was found to have a maximum energy for He2+ of (40(-8)(+3)) MeV and was directional along the laser propagation path, with the highest energy ions being collimated to a cone of less than 10 degrees. 2D particle-in-cell simulations show that the ions are accelerated by a sheath electric field that is produced at the back of the gas target. This electric field is generated by transfer of laser energy to a hot electron beam, which exits the target generating large space-charge fields normal to its boundary.
KW - PROTON-BEAMS
KW - ACCELERATION
KW - GENERATION
KW - PETAWATT
KW - SOLIDS
U2 - 10.1103/PhysrevLett.96.245002
DO - 10.1103/PhysrevLett.96.245002
M3 - Journal article
VL - 96
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 24
M1 - 245002
ER -